Nice piece - SIG SAUER Stock Adapter Low Profile Tube - 1913 Folding

Put on a Sam7k44. At first you might think it wont fit. You must pay close attention to the picatinny slots to get it mounted properly. Also, the first time I went to fold it I thought it was broke as it wouldn't budge. Push harder, it will loosen up "just right" with enough folding repetitions. Only other thing to mention is that if your considering this vs the SIG version that uses an actual AR buffer tube...this one is shorter and will have a shorted length of pull. For my short arms this more compact unit works great.